over serviced ?

How many PMD's? That's the real question when it comes to 6.5's. Have they remote mounted them? Still using Stanadyne's or have they gone to D-Tech's?

I agree that analysis needs to done at the same through the cycle. I just meant that it would be interesting to see how the oil's quality changes over time.
 
Interesting discussion started here. I am big on preventative maintenance and change oil mid-season regardless. I will continue to do so because it's quick, cheap & easy and I don't have to wonder if my oil is crap....but....the question is/was.....is the oil I pull out that looks perfectly good ( not black and dirty ) still up to specs ? I would like to see an analysis just for kicks.
 
fwebster said:
<snip>... ANd, I don't have to worry about trapped moisture.
Click to expand...

I believe that this is why the recommended oil change interval is so low these days. A lot of people use their vehicles primarily for short trips. They don't get their engines up to full operating temperature and keep it there long enough for the heat of the engine to evaporate any water that may accumulate in the oil. It is also a problem because warming up the engine and oil and letting it cool down is what causes the condensation in the first place.

I live about 60 miles from my office. I changed the oil in my truck every 10,000 miles. It had 386,000+ miles on it when I traded it in. The engine itself was in fine shape. Every other system and accessory attached to it died, or was dying.

I go with the "once per season" oil change on the boat unless I break the 100hour mark, though. I'm not taking chances with the boat...

Michael
 
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I change at 50 hours. I feel that since we use our boat for a lot of watersports, the excessive wear of pulling riders up, towing etc has got to break it down faster?

Either way, Im due in the next week to change.
 
K-9 said:
:grin: taste the new oil and then the old used oil will taste like metal and burnt:wow:
Click to expand...

Can you tell me where you developed this technique and maybe describe how accurate it is?

I am concerned that use of this procedure could cause some long-term brain damage that may impair one's thinking.
 
mistercomputerman said:
Can you tell me where you developed this technique and maybe describe how accurate it is?

I am concerned that use of this procedure could cause some long-term brain damage that may impair one's thinking.
Click to expand...

Nah. Iron is an important mineral needed in the human diet. Save yourself the money on buying vitamin/mineral supplements - get it direct!
 
Had an interesting discussion with my mechanics when the oil analysis came back from the last oil change.
Some of the info is useful, some not so much. Here's what CAT said on the port engine:
"Action Required"
"Copper and Lead slightly high. Possible rod/main bearing wear. Check filter for debris"

When I showed it to the mechanics, they basically said "So, what? You want to pull and rebuild the engine?" They have a special tool for cutting open the oil filters, and there were no metal shavings. They're 25 year old engines (but only around 1000 hrs), there's going to be some wear, they told me. Run 'em until they need to be rebuilt.
 
Interesting discussion, and as many different answers as participants. It would be interesting to have the oil analyzed, but in my opinion, thats why it's caused a preventive maintanance. You are trusting that the manufacturer has based the recommendation on a true life cycle of the product being used, in this case crankcase oil. The only problem is that my engine may run a few degrees cooler, have a higher RPM range, have a slightly different mixture, etc.. and it may need replacement every 96 hours. You may have a completely different set of parameters and may only need it every 125 hours.
As they say on TV "Your Results May Vary!"
 
The only time I have seen oil analysis done was in factory machinery settings where oil change involved hundreds of gallons of oil so the cost of regular analysis was cheaper. I am not going to start analyzing my oil but if someone else wants to do the experiment then I certainly would be interested in the results.

I know I do not remember the details of the article correctly; but, I have seen a consumer reports article where they ran different oils and different change intervals in taxi cabs for 100,000 miles. The engines (which were built specifically for this experiment, meaning they should all start from the same place) were torn apart at the end and micrometer measurements were made of various parts and there was no significant difference in anything even out to 10000 miles between changes. The synthetics seemed to keep their viscosity rating for longer than dinosaur oils but the end result of wear and tear to the engine did not suffer with the dino oil.

It is true about circumstances and need for prevention. For instance, my sterndrive's lube is not changed yearly since my boats spend most of their lives on a lift and not in the fresh water so water intrusion is less of a concern. I usually change every other year.

John
 
Loneranger said:
The engines (which were built specifically for this experiment, meaning they should all start from the same place) were torn apart at the end and micrometer measurements were made of various parts and there was no significant difference in anything even out to 10000 miles between changes.
John
Click to expand...

My first 2 Audi TT's had 10K mile recommended changes. I went with that schedule and they are both still on the road. However, Audi has changed that back to the more conventional schedule. The boats get at least yearly changes.
 
BMW schedules dictate every 15k using their oil.

I could not stand to see that so I still use the convention 3k change period. It's definitely overkill according to them.

Doug
 
My Porsche 997 Twin Turbo has 20K miles oil & filter changes per the manual with Mobile One. I have had the car 3 years and only 15K miles so far but change the oil & filter every year. Granted it uses 12qts oil and 2 oil filters but with ~550hp (GT1 split block dry sump) I feel better about changing the oil considering how hard this little 3.6L engine is working!
 
My Maybach 62S says 7500 miles, but I do whatever the dealer tells me, as it's easy for them to get it out of the hanger when I take the G-5 over the pond.
 
Screw that prissy stuff. I change the oil in my rompin' stompin' Hemi Cuda every 3000 miles, as per the owner's manual.

71hemicuda.jpg


And yeah, I don't know who John and Katie are and don't give a damn either.
 
why is it parked in your living room?
 
I wish it was parked in my living room. Couple of years ago, certified original Hemi Cudas, (numbers matching) were selling for six figures and the convertibles where well into 7. One sold at Barrett Jackson in 2006 for 2.2 million. Don't know if their is a market today, the auctions are only showing reproductions.

The guy who invented that memory foam stuff that they use for mattresses and the like has a glassed in garage in the center of his house with a raised turntable. He parks a different collector car on the turntable every now and then. Think he's around the Milford or West Milford (I forget which) area.

Best regards,
Frank
 
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come on now cars & boats are so different one runs in a relatively clean environment the other a very dirty
 
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